Hartlöten

Brazing

General information

Brazing is the process of joining metal parts using metal alloy binders with a melting point above 427 °C but below the melting point of the parts being joined. This technique allows similar and dissimilar metals to be joined together.

Soldered joints:

• are much stronger and more durable than standard metal bonding methods,
• ensure high tightness against liquids and gases,
• can withstand shocks and vibrations,
• are resistant to ordinary temperature changes,
• have high electrical conductivity,
• can be easily plated by conventional means.

The type of solder used in the brazing process depends on the parts being brazed. The most commonly used solders are copper-phosphorus, silver, aluminum, copper, nickel, cobalt.

Induction soldering

Modern induction heating provides reliable, non-contact and energy-efficient heating in a minimum of time without flame. The time per cycle of induction heating is very short compared to flame soldering, so more parts can be processed in the same amount of time with less heat released to the environment. Induction brazing allows you to control the timing, temperature, fixturing and positioning of parts, making the process repeatable and ensuring a uniform end result.

Semiconductor systems are capable of heating very small areas within precise manufacturing process tolerances without compromising individual metallurgical properties. For large volumes or processes with required workmanship, parts can be inductively brazed in an inert atmosphere without flux or costly cleaning procedures, ensuring reduced oxidation.